Heavy Metal Part 1

So we are rebuilding our apartment from scratch (New walls, floors, ceiling and kitchen) and as a part of that, the kids are getting their own rooms. In their own rooms, they will get raised beds that are attached to the walls in three corners. The fourth corner has to either stand on a post on the floor, or hang from the ceiling. Naturally, I want to make a ceiling mount to keep the floor clear.

This is the general design (But the post has to be about 1 m long):

And after an evening with an angle grinder and a metal bandsaw (10 out of 10 will recommend. It was just as good as it looks on YouTube) I had the upper and lower parts cut out.

Next step is the get solid enough square tubes, drill all of the necessary holes, print plastic inserts to make the bolts easier to attach, paint and assemble.